Question
Which curve shows the concentration of product during the course of an enzyme-catalysed
reaction?
Answer/Explanation
Ans: A
Question
Blood clotting involves a cascade of reactions. Which statement describes the blood-clotting
process?
A. Red blood cells release clotting factors that result in the production of fibrin.
B. Clotting factors trigger the conversion of the inactive thrombin to prothrombin.
C. Insoluble fibrinogen is converted into soluble fibrin.
D. Fibrin forms a mesh that traps platelets and blood cells.
Answer/Explanation
Ans: D
Question
The picture shows lentils sprouts growing towards a light source from the left.
How has this response been brought about?
A. A higher concentration of auxins on the light side caused faster photosynthesis.
B. A higher concentration of auxins on the shaded side caused faster meiosis.
C. A higher concentration of auxins on the shaded side caused faster cell elongation.
D. A higher concentration of chloroplasts on the light side allowed for more photosynthesis.
Answer/Explanation
Ans: C
Question
The diagram shows the side view of the human elbow. Which structure is the radius?
Answer/Explanation
Ans: B